EP0215641A2 - Vorrichtung zur Schwingungsprüfung - Google Patents

Vorrichtung zur Schwingungsprüfung Download PDF

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Publication number
EP0215641A2
EP0215641A2 EP86307004A EP86307004A EP0215641A2 EP 0215641 A2 EP0215641 A2 EP 0215641A2 EP 86307004 A EP86307004 A EP 86307004A EP 86307004 A EP86307004 A EP 86307004A EP 0215641 A2 EP0215641 A2 EP 0215641A2
Authority
EP
European Patent Office
Prior art keywords
holder
cube
units
support
testing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86307004A
Other languages
English (en)
French (fr)
Other versions
EP0215641A3 (de
Inventor
John Keith Batchford
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marconi Co Ltd filed Critical Marconi Co Ltd
Publication of EP0215641A2 publication Critical patent/EP0215641A2/de
Publication of EP0215641A3 publication Critical patent/EP0215641A3/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G01M7/06—Multidirectional test stands

Definitions

  • This invention relates to a vibration testing apparatus. It arose in connection with the testing of electronic units but is also applicable to the testing of other, e.g. mechanical, units.
  • the testing process can be both time consuming and labour intensive. Furthermore it may be difficult or impossible to clamp some awkwardly shaped objects in more than one orientation on the table.
  • This invention provides an apparatus for vibration testing units comprising: a support; means for vibrating the support; a holder for holding a plurality of units to be tested at different orientations, the holder being adapted to be mounted on the support in such a way that it can be moved between a number of different attitudes thereby testing each unit at each of the said orientations.
  • a unit to be tested can be moved between the necessary different orientations (preferably three orthogonal orientations) simply by adjusting the holder between the aforementioned attitudes.
  • the need for repeated clamping and unclamping can thus be avoided.
  • the holder can take an unlimited number of possible forms, the only essential characteristic being that in progressing through the aforementioned attitudes it should support the units to be tested in the aforementioned orientations.
  • These orientations will normally be three mutually perpendicular orientations because, as previously mentioned, it is normally required to test a unit for tolerance to vibration in three perpendicular directions.
  • the requirement to support the units at three mutually perpendicular orientations can be met by making the holder in such a way that it either defines a cube or defines parts of the faces of an imaginary cube. By rotating the holder about an axis passing through the centre and two opposite corners of this real or imaginary cube any unit to be tested, mounted on one of the faces, can be moved between the aforesaid orientations.
  • This detent means preferably acts on one or more corners of the cube, if the holder is in the shape of a cube.
  • the detent means is preferably formed by hydraulically operated clamps.
  • the said holder is preferably formed from an open frame since such a construction can be made relatively light weight yet rigid thereby optimising the efficiency with which vibrations produced by said support are transferred to the units under test.
  • means for manually adjusting the attitude of the holder and means for holding or clamping the holder in particular attitudes.
  • a vibrating table l may be vibrated in direction Z (i.e. up and down) by vibrating means (not shown).
  • a holder 2 comprising an open frame formed from rigid, tubular members e.g. as shown at 3 joined to each other by socketted balls e.g. as shown at 4A, 4B, 4C, 4D is mounted to the vibrating table l by means of an angled bearing unit 5.
  • An extension shaft which projects from the ball 4D at one corner of the holder 2 is accepted by the bearing unit 5 in such a way as to allow rotation of the holder 2 about an axis 6 extending from ball 4A to ball 4D.
  • Three detent devices in the form of hydraulic clamps 7 are mounted on the vibrating table l. When activated the clamps 7 engage in location holes 8 on the outside surfaces of those socketted balls 4 which are positioned at the corners of the lower face of the structure 2.
  • Means is provided for adjusting the attitude of the holder by rotating it about axis 6.
  • it is shown as a handle 9 but it will be appreciated that other possibilities such as an electric motor could be used.
  • the holder After the holder has rotated through l20° about its axis of rotation 6, it may be clamped by the hydraulic clamps 7 in this new attitude.
  • each face of the holder 2 is identified, and its starting orientation is noted, then it will be seen that, each time it is rotated l20° about its axis 6, each face moves into an orientation which is at 90° to its previous orientation. After three such rotations, the structure is returned to its previous position, and each face has been through each of three major axes: X, Y and Z.
  • Fixing bosses l0 are used to fix electronic units ll to any or all faces of the holder 2.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
EP86307004A 1985-09-11 1986-09-11 Vorrichtung zur Schwingungsprüfung Withdrawn EP0215641A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8522501 1985-09-11
GB858522501A GB8522501D0 (en) 1985-09-11 1985-09-11 Vibration testing apparatus

Publications (2)

Publication Number Publication Date
EP0215641A2 true EP0215641A2 (de) 1987-03-25
EP0215641A3 EP0215641A3 (de) 1989-09-06

Family

ID=10585009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86307004A Withdrawn EP0215641A3 (de) 1985-09-11 1986-09-11 Vorrichtung zur Schwingungsprüfung

Country Status (2)

Country Link
EP (1) EP0215641A3 (de)
GB (2) GB8522501D0 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105571798A (zh) * 2015-12-15 2016-05-11 北京航星机器制造有限公司 电子元器件三向振动试验工装
CN112082721A (zh) * 2020-09-17 2020-12-15 航天科工防御技术研究试验中心 一种电缆筛选试验夹具

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4848160A (en) * 1987-10-21 1989-07-18 M/Rad Corporation Multi-axis test fixture system
RU2178877C2 (ru) * 1999-11-10 2002-01-27 Государственное унитарное предприятие "Конструкторское бюро приборостроения" Стенд для испытания изделий на вибрацию
RU2548686C1 (ru) * 2013-12-11 2015-04-20 Открытое акционерное общество "Конструкторское бюро приборостроения им.академика А.Г.Шипунова" Стенд для испытания прицела на вибрацию
CN105928678B (zh) * 2016-04-18 2019-03-12 中国空间技术研究院 一种ccd图像传感器振动、冲击试验夹具
CN115979562B (zh) * 2023-03-22 2023-05-12 沈阳铁路信号有限责任公司 一种振动测试设备固定装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1080049A1 (ru) * 1978-03-03 1984-03-15 Koltyrev Viktor Приспособление дл испытани изделий на трехкомпонентную вибрацию на однокомпонентном вибровозбудителе
GB2135063B (en) * 1983-02-10 1986-04-23 Secr Defence Vibration testing apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105571798A (zh) * 2015-12-15 2016-05-11 北京航星机器制造有限公司 电子元器件三向振动试验工装
CN112082721A (zh) * 2020-09-17 2020-12-15 航天科工防御技术研究试验中心 一种电缆筛选试验夹具

Also Published As

Publication number Publication date
GB8522501D0 (en) 1985-10-16
GB2180945B (en) 1989-09-06
EP0215641A3 (de) 1989-09-06
GB8621956D0 (en) 1986-10-15
GB2180945A (en) 1987-04-08

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Inventor name: BATCHFORD, JOHN KEITH